Malicious PDF — malware analysis report

Static analysis result for SHA-256 67fd35e9911881f1…

MALICIOUS

PDF

58.2 KB Created: 2020-11-10 11:49:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: 0544c70281249fd43d0bb2e7041d3f0d SHA-1: 95c357d28f8dfd16ca323c93cd185a0d5b99785b SHA-256: 67fd35e9911881f16a0428c2442f7224337e154da66afb3d31a8fae7fe80a3e3
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://trafffi.ru/aws?keyword=noodle+st+fullerton+ca PDF link annotation
    • https://vizomitula.weebly.com/uploads/1/3/4/2/134266598/2d1e8591d9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378830/normal_5f8c6c69245cd.pdfIn PDF document text
    • https://xifobosakup.weebly.com/uploads/1/3/2/8/132815359/4688703.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370056/normal_5f8c7d19df1a0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390071/normal_5fa0ce09b7b08.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417145/normal_5f9ca1fbecf1c.pdfIn PDF document text
    • https://jutawalafomas.weebly.com/uploads/1/3/4/3/134316275/fafewaxesiso.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wovigebi/bofisejedizosaberodu.pdfIn PDF document text
    • https://s3.amazonaws.com/mozirolinitaje/korekumodumulenuganemoti.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/animorphs_book_12.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb1edc7f-4d55-455d-92fe-e78905ea9214/auto_call_recorder_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/wegemebufojafak/duweloxov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dbd7702a-571e-4939-9021-9e6bce677f3a/61158878448.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dbf0c9e7-8db1-4732-a84f-9325a8db6fec/90149359152.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ec674a4-5ca8-4dfa-85ea-c19633bd4b77/turatap.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ab82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB82 4984 bytes
SHA-256: 5363f13f24f2a0245fabbf96b731afe7ed0c19d561a38562524074751cacd508
font_01_sfnt_off0000bc86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC86 9404 bytes
SHA-256: cfb822033d0fc03f90e9357771a75af56c963f8b9881bb3aace893df0629b7ca

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